My husband got me the 16gb iPhone 4 and he wasn't planning on upgrading just yet. Well he changed his mind and all they had was the 32gb. I would rather have the bigger phone and thought I could just switch the sim cards and re-sync. When my husband asked the Apple people they said we couldn't do that. They said I need to come in and return my phone and rebuy the 32gb. Is this right?? Thanks!!